USNO-A2.0 1275-07482685

All names: SDSS J091651.96+414703.7, USNO-A2.0 1275-07482685, Gaia EDR3 815855151276777856, GALEX J091651.9+414704, Gaia DR3 815855151276777856, SDSS J091651.97+414703.80, WD 0913+419, Gaia DR2 815855151276777856, SDSS J091651.97+414703.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 16 51.96 (0.2) 09 16 51.97 09 16 51.96 (0.2) 09 16 51.96 09 16 51.97 (0.2) 09 16 51.97 09 16 52.20 09 16 51.97
Declination 41 47 03.76 (0.1) 41 47 03.75 41 47 03.76 (0.2) 41 47 03.76 41 47 03.78 (0.1) 41 47 03.75 41 47 02.04 41 47 03.77
Spectral type DBAH: DB DBAH DBA DBA DBAH: DB
Effective temperature [K] 14803.0 13244.0 13715.0 15178.0 (93) 13791.0 (746) 15623.0 (170) 14894.0 (180)
log(g) [cgs] 8.09 8.03 8.12 8.00 (0) 8.14 (0.09) 8.30 (0.1) 8.22 (0.1)
Mass [M] 0.643 0.604 0.66 0.673 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.3194
log(H/He) -5.15 -5.18 (0.4)
log(C/He)
log(Ca/He) <-7.18
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 3.68 (0.2) 3.64 (0.3) 3.68 3.68 (0.2)
Distance [pc] 271.64 (15) 274.48 (22) 321.00 271.64 271.64 (15)
Composition He
Proper motion (right ascension) [mas/yr] -5.878148992 (0.2) -5.9578323 (0.4) -5.878 (0.2) -1.9
Proper motion (declination) [mas/yr] -1.529704515 (0.2) -1.533069675 (0.3) -1.53 (0.2) -0.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.00 (0.3)
V magnitude
R magnitude 18.50 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.71 (0.02) 18.71 (0.02) 18.74 (0.02) 18.71 (0.02)
g magnitude 18.72 (0.008) 18.72 (0.008) 18.72 (0.02) 18.72 (0.02)
r magnitude 18.99 (0.01) 18.99 (0.01) 18.98 (0.01) 18.98 (0.01)
i magnitude 19.06 (0.01) 19.06 (0.01) 19.06 (0.02) 19.07 (0.02)
z magnitude 19.53 (0.05) 19.53 (0.06) 19.55 (0.05) 19.55 (0.05)
G magnitude 18.85 (0.02) 18.88 18.85 18.85 (0.003)
BP magnitude 18.83 (0.02) 18.74
RP magnitude 18.92 (0.03) 18.84
Pan g magnitude 18.76 (0.006)
Pan r magnitude 19.00 (0.01)
Pan i magnitude 19.24 (0.01)
Pan z magnitude 19.42 (0.004)
Pan y magnitude 19.64 (0.09)
E(B-V) 0.015

* Constant surface field

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The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.